Exposure Triangle Calculator
Change one exposure setting (aperture, shutter speed, or ISO) and calculate the compensating adjustment to maintain the same exposure.
Compensated Settings
The Exposure Triangle links three settings that control how much light reaches your camera sensor:
- Aperture (f-stop) — size of the lens opening
- Shutter Speed — how long the sensor is exposed
- ISO — sensor sensitivity
Exposure Value (EV) is calculated as:
EV = log2(f² / t) - log2(ISO / 100)
where f = f-number, t = shutter speed in seconds.
One stop of light can be compensated by:
- Doubling or halving the shutter speed
- Multiplying or dividing ISO by 2
- Moving one full f-stop on the aperture scale
Standard full f-stop scale: f/1, f/1.4, f/2, f/2.8, f/4, f/5.6, f/8, f/11, f/16, f/22, f/32
How this calculator works: Enter your current settings and one new value you want to change to. The calculator determines the stop difference and shows what the other settings need to be to maintain the same exposure.